CONVENIENCE: Mini miniature drill feels comfortable in the hand and have a 3-jaw hardened steel keyless chuck, so you don't have to bother with swapping out collets. compact size is perfect to go in a toolbox or in a pocket Item Weight 82 g High precision, can clip 0.3 -3.4mm drill bit. For miniature hand drill hobby. Precise, accurate and efficient. Suitable for wood, plastic, rubber, model and others material to drilling hole. Do not fit steel, iron, stone, such hard things. Perfect for drilling wood, Jin Gang, linden, horn, amber, olive, walnut, plastic and other materials. Colour: black+silver Material: metal+HSS size: 9.5cm Package Contents: 20 x twist drill 2x Hand twist drill Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.